Update 2025_lhc.md

docs/logbook/LHC/2025_lhc.md

@@ -40,6 +40,9 @@ The tables below can be sorted by clicking next to the column headers.
 | 2025-06-22 15:40 | 2025-06-22 20:40 |     0.5H     |    MD14963    |                   MO detuning                    |                                  [Shift Start](logbook://2025-06-22,1081,4322659) / [Summary](logbook://2025-06-22,1081,4322924)                                   |
 | 2025-06-28 08:30 | 2025-06-28 12:00 |     0.3H     | Commissioning |                RDT vs phase knob                 |      [Shift Start](logbook://2025-06-28,1081,4327972) / [Summary](logbook://2025-06-28,1081,4328352) ([OP][op_rdt_vs_phase_knob]{.cern_login target=_blank})       |
 | 2025-06-28 12:00 | 2025-06-29 05:00 |   0.5H 1HN   | Commissioning |                 OO Commissioning                 |       [Shift Start](logbook://2025-06-28,1081,4328097) / [Summary](logbook://2025-06-29,1081,4328684) ([OP][op_oo_commissioning]{.cern_login target=_blank})       |
+| 2025-09-03 00:00 | 2025-09-03 04:00 |    0.5WN     |    MD15003    |    Valiation of combined ramp/squeeze/rotate     |           [Shift Start](logbook://2025-09-03,1081,4377865) / [Summary](logbook://2025-09-03,1081,4378088) ([OP][op_MD15003]{.cern_login target=_blank})            |
+| 2025-09-04 23:00 | 2025-09-05 07:45 |    1.1WN     |    MD15464    |    Refining optics corrections at top energy     |           [Shift Start](logbook://2025-09-04,1081,4380286) / [Summary](logbook://2025-09-05,1081,4384687) ([OP][op_MD15464]{.cern_login target=_blank})            |
+| 2025-09-08 04:00 | 2025-09-08 08:30 |    0.5HN     | Commissioning |               Pb Ion Optics Part 3               |                                                          [Shift Start](logbook://2025-09-08,1081,4382873)                                                          |
 <!--                                                                                                                               Logbook Links: [LINK_NAME](logbook://date, logbook_id, event_id)            -->
 
 <!-- OP logbook links below -->
@@ -61,6 +64,8 @@ The tables below can be sorted by clicking next to the column headers.
 [op_rematched_ir7]: https://be-op-logbook.web.cern.ch/elogbook-server/GET/showEventInLogbook/4322475
 [op_rdt_vs_phase_knob]: https://be-op-logbook.web.cern.ch/elogbook-server/GET/showEventInLogbook/4328444
 [op_oo_commissioning]: https://be-op-logbook.web.cern.ch/elogbook-server/GET/showEventInLogbook/4328594
+[op_MD15003]: https://be-op-logbook.web.cern.ch/elogbook-server/GET/showEventInLogbook/4378082
+[op_MD15464]: https://be-op-logbook.web.cern.ch/elogbook-server/GET/showEventInLogbook/4380521
 
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@@ -83,4 +88,8 @@ The tables below can be sorted by clicking next to the column headers.
 *[MO detuning]: Measurements of amplitude detuning with several settings of the MO, as input to Massimo/Dora's cleaning MD.
 *[RDT vs phase knob]: Checked MO RDTs response to phase knob at injection for pp optics, seem to observe improvements with a stronger setting of the phase knob. Difficult measurements due to high losses on kicks.
 *[OO Commissioning]: Measured optics in the OO cycle, with PbPb corrections. Optics in ramp were ok, with a match point showing a peak of 17%. At FT the beta-beat and dispersion show a similar quality to that of ions in 2024 and of the 2025 PbPb optics at 1.2m, but large dispersion error on left side of IP6. With PbPb corrections through the squeeze optics are fairly consistent but we see a peak beta-beating of 17% at EoS. SbS hints at large local errors in the IRs at this lower energy. The beta-star-beating at IR2 was very bad at EoS, especially B1. Computed and tested some global corrections which were beneficial to beta-beating, dispersion and beta-star, would need waist knobs to do better. To be decided if these are to be used for the OO run.
+*[Valiation of combined ramp/squeeze/rotate]: Measurements during the ramp for combined ramp/squeeze/rotate MD. Standard validation at various points. Optics found to be good throughout the ramp, in line with regular 1.2 and 2m.
+*[Refining optics corrections at top energy]: Local chroma at injection wihtout QFB (last point with QFB). ADT-ACD settup in optics mode at injection, 10mm kicks. ADT-ACD at FT, large enough kick to measure linear optics. At FT had problem with BPM concentrator for B1. Local chroma of B2 at 18cm. Kmod at 160 and 120 urad for effect of crossing-scheme on lumi imbalance. Kmod at 120urad with Felix waist knob. Kmod and ACD with 28april waist knob. ACDkicks and xing scan for b6 feed-down to f0140 RDT.
+*[Pb Ion Optics Part 3]: Attempted to validate Pb optics with enf of squeeze corrections from last time, as filler during validation of loss maps during vaccuum issue. Quick measurement at injection to check BPMs, but then OP were unable to get cycle to ramp due to inconsistency in ADT settings. Gave up after several hours as LHC switching back to lumi production. Includes summary of previous ion fill results.
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